Chip ejector for heel seat fitting machines



y oct, 22, 194e.

T. B. CLARKE ETAL CHIP EJECTOR FOR HEEL SEAT FITTING MACHINES Filed uarch a; 1945 4 sheets-sheet 1 `Inventnf; /Iomas aggott Varie F rede r/cA' h/I//lam Henry Mil/fam.;

i 7c orney x'W Oct 22, 1946.

Figi? T. B. CLARKE ETAL CHIP EJEGTOR FORl HEEL SEAT FITTING MACHINES Filed March 8, 1945 4 Sheets-Sheet 2 ,4- nvenmw mamas Baggot C/wfe. Healer/ck Wf//fam Henry Wf//lams 0d'. 22, 1946, l T. B, CLARKE ETAL 2,409,737 Y CHIFEJECTOR FOR HEEL sk :Afr FITTING MACHINES Filed Haren-8, 1945v 4 sheets-sheet s Inventors 5 Mamas-Baggot Clark:

`octe 22, 1946.

T. B, CLARKE ETAL y CHIP EJECTOR FOR HEEL SEAT FITTING vMACHINES Filed March 8, 1945 4 sheets-sheet 4 Patented Oct. 22, 1946 Y Y CHIPEJECTOR FOR` HEEL SEAT FITTING MACHINES Thomas Baggott Clarke and Frederick William Henry Williams, Leicester, England, assignors to United Shoe Machinery Corporation, yFlemington, N. J., a corporation of New Jersey Application March 8, 1945, Serial No. 581,585

In Great Britain June 6, 19,44 l

7 Claims.

This invention relates to machines for use in the manufacture of shoes and particularlyto improved chip ejector mechanism adapted for use, for example, in heel seat tting machines.`

In order to remove chips of surplus outsole material from crease plates of heel seat fitting machines of the general type disclosed in United States Letters Patent No. 2,215,524, granted .September 24, 1940, on an application filed in the name of George Hazelton, for example, ejectors of various constructions have been proposed. The chips are commonly forced over the front edges of the crease plate by the ejector and preferably fall into a container.

The rear ends of chips left on the crease plate after the completion of the heel seat iitting operation are located in diierent positions lengthwise of said plate. The chip should be moved forward by the ejector with the proper amount of force to cause it to clear the forward edges of the crease plate and to fall into the container. Such force, however, should notbe so great that the chipfis thrown past the container and onto the floor. Many ejectors commonly in use rely upon springs for their actuation, and With such ejectors ithas been proposed to provide dashpots operating in opposition to the springs in order to insure that the chip shall be so operated upon thatit is removed from the crease plate and falls into the container. It has been found, however, that the dashpot adds considerably to the expense vand service of the ejector. Moreover, the action of the dashpot when not properly adjusted tends to slow up the production of the machine.

It is an object of the present invention to provide a simple, spring-actuated ejector Yby the use of which the above-mentioned chips may be quickly and effectively removed from crease plates of heel seat iitting machines of the general type referred toabove, with the proper amount of force to deposit them in a container.

` With the above object in view and in accordance with a feature of the present invention there cause chip ejecting movement of said bar to cease, and means whereby said cam may be moved into different adjusted positions in order to cause the bar to be disconnected from the actuator at different portions of the driving stroke of the actuator.

2 The illustrative ejector, which is eiective in its operation and is of simple construction, will be hereinafter described in connection with the accompanying drawings, in which Fig. 1 is a side view, partly in section, of the l heel seat fitting machine disclosed in said Letters l ejector mechanism;

Patent No. 2,215,524, provided with my novel Figs. 2, 3 and 4 are side, rear and plan views, respectively, of the ejector in its cocked position ready to be tripped preparatory to ejecting a chip from the machine; l p

Fig. 5 is a view corresponding to Fig. 2 showing the ejector prior to being cocked; and

Fig. 6 is an exploded Yview showing, in perspective,.the various parts of the ejector in its cocked position. Y

As illustrated, the ejectorcomprises a U-shaped bar 20 having at its closed end a T-shaped head 22 which is moved forward over a multipart crease plate 24 (Figs. 1, 2, 4 and 5) of the heel seat iitting machine disclosed in the above-mentioned Letters Patent No. 2,215,524, for example, in order to slide a U-shaped chip 26 (Fig. 4), trimmed from the heel seatportion` 25 (Fig. l) of an attached outsole of arshoe 21 and lying upon the crease plate,` over the forward edges 28 (Figs. l and 4) of the crease plateV and into a container (not shown) arranged at thefront of the machine. Since the present invention is directed primarily to the ejector, only those parts of the heel seat fitting machine which actively co-operate with said ejector will be disclosed. It will be understood that the ejector, slightly modied if desirable, can be readily incorporated in various types of heel seat fitting machines now in use.

Secured by screws 30 to a head casting 32 of the main frame of the above machine is a bracket 34Jhaving secured to it by a setscrew 36a fulcrum pin 38 upon whichlare' pivcted bell-crank V levers 49, 42 (Figs. 4 and), respectively, andan adjustable cam 44. As will appear later, the bellcrank lever 4G, which may be referred to as a driving lever or an actuator, is latched in the cocked l position shown in Figs. 2 to 4 and 6, to operate,

when released through mechanism to be later described, the bell-crank lever 42, which may be referred to as a drivenldever and comprises a depending arm 46 bifurcations 48 of which are arranged at oppositesides of a screw 5U( Figs. l and 3) utilized to adjust a heel seat reducing knife 5l (Fig. 1) relatively to aknife` carrie'r`52mounted for forward and rearward movement in a guidef way 54 (Fig. 3) of the machine frame.` A

VThe rear end of the bifurcatedbar'ZU is mount-l ed upon studs 56 secured to the lower ends of the bifurcations 48 of the depending arm 46, the bar being held on the studs by a cotter pin 58 (Figs. 3, 4 and 6). Secured to a forward arm 6) of the bell-crankl leverv42- and to a dependingarm 62 of the bell-crank lever 48 are studs. 64, .'86, respectively, which are fixed to opposite ends of a tension spring 68 and are continuously urged toward each other by said spring. Thebell-crank lever 48 is constantly urged clockwise,'as viewed.

in Figs. 1, 2, and 6, about the fulcrum pin'38 by a strong spring 'I8 the lowerend of which is connected to a forward arm-'|2ofthe-bell-crank lever 40 and the upper end of which lis attached to a stud 'I4 (Figs. 1 and 2) secured to the head casting 32 of the machine.

While the machine is idle and during themajor portion of the operation of the machine, the depending arm 62 of the bell-crank lever 46 is forced against a spring-resisted buffer stop 16 mounted on the bracket34, the 'arm 68 of the bellecrank lever42 at such time'being held in its retracted -idle positionby the spring 68, said position being determined by the engagement of the forward :arm 60 of said lever 42 with a spring-resisted buffer'stopll also Vmounted-.upon the bracket 34. After the heel seat'portion25 (Fig. 1) of the attached outsole of the shoe 21 has been fitted, the depending'arm 62 ofthe bell-crank lever 48 is moved rearward away from the'spring buffer stop"y 'I6 by ashoulder-82` (Figs. 2, 5 yand 6) of a latch 84 which is mounted upon a fulcrum pin 86 carvried byan .upstanding block 88 Asecured to the knife carrier 52. It will beunderstood that as the vknife carrier 52, together with the block 88,/ moves rearward the latch 84 is in a raised position, since at such time it is held in engagement with astopiface 96 of the block by a spring-pressed plungere92 `and therefore the shoulder 82 of the latchwill contact the arm 62 during retraction of the knife carrier. As explained later, almost immediately after the latch 84 has been retracted it is tripped by-.a rod l94 to enable the depending arm t62 to move forwardiunder spring action against the spring-buffer: stop-16 to'cause, through -mechanism .which will be hereinafter described, thechip 26 to be ejected, the machine then beingidle. '-Accordingly,` when the machine is idle, .the knife carrier-52 is in its retracted position, shown in Fig.'5,-the latch-84 at such time being depressed against the action of the spring-pressed plungerf92 (Figs.v2 and-6) away from the stop face 9|)V ofthe block 88 bythe rod`94, which is actuated by mechanism hereinafter described.

As the knife carrier-52 moves rearward after the heel seat tting operation, thev shoulder 82 of the latchf84 forces the depending arm 62 of the actuator rearward against the action of the Asprings'68,l`|ll and, after reaching the position `shown in Figs. 2 and 6, comes to rest, the rear end oft'he latch then being positioned beneath but spacedv from the'rod'94 which is pivoted at its .upper -end to abent'lever 96. The lever 96 is adjustably secured to atrea'dle-controlled arm 98` through which a multipart bulger 99 depresses 65 the heel seat portion of thesole of the shoe through aU-shapedppening |08 (Fig. 4) of the `crease plate-24. The rod 94 passes through a -vertical'bore I 02 in a lateral lug |84 of the bracket "34, the arrangement being such that when the treadle-operatedzarm' is swung clockwise as viewed. 'in','Fig.;2.upon releaseof a treadle (not shown) by theoperatonthe-rodiswings the latch 84 clockwise;.with therA result'that the depending arm- 62, ,Which:at .thatztimaias willI appearlaten 25:25 Ward armA 68 ofthe bell-crank lever 42.

is coupled to or connected for positive movement with the bell-crank lever 42, swings clockwise from its position shown in Fig. 2 under the action of the springs 68, 'l0 into engagement with the 5 spring buffer stop 16.

Mounted for swinging movement in a bore of a forward projection of the depending arm 62 is a pin |06 (Figs. 2, 3, 5 and 6) to which is secured at opposite sides of the arm a pawl |88 (Fig. 6) The 10;'pawl |08 is constantly urged in a clockwise direction (Fig. 6) by a spring H2 upper and lower -ends of which arev attached to studs H4, H6, respectively, secured to the pawl and to the depending arm 62. Movement of the pawl |08 clockwise, as viewed in Figs. 1, 2 and 5, by the action of the tension spring H2 is limited by the en- I gagement of a roll H8 carried by the pawl with an eccentric face I I9 of the cam 44. The face I I9 of the cam 44 is so shaped and arranged that as the depending arm 62,/ which may be referred to as a pawl carrying arm, reachesapproximately its cocked position, shown in Fig. 2, the pawl is permitted to Vmove into a notch or against a shoulder |28 (Fig. 6)'formed inthe lower face of the for- When the latch'84 is depressed by the rod 94, the depending arm 62 of the bell-crank lever 40 swings forward, rotating with it through the positive pawl and shoulder driving connection above described A430 the bell-crank lever 42, with the result that the T-shaped head 22of the bifurcated ejector bar 20 is moved forward against the U-shaped chip 26 left upon the crease plate 24, with sufficient force to slide the chip over the forward edges 28 of .35 the plate and-intothe.above-mentioned container (notl shown) at the front of the machine.

:The cam'44 (Fig. 6) has secured to it a thread- `ed'stud |22 which vfits into an arcuate slot |24 `ofthebracketl and is clamped in different op- :;40 erative positions to the bracket by a nut |26.

with the shoulder Iza of the arm eo of the beucrank lever .42 as the result of the action of the eccentric face I I9 ofthe cam 44 upon the roll H8. When the driving connection between the pawl carrying lever 62 and the arm 66 is broken, the driven bell-crank lever 42 operated upon by the tension spring 68 swings in a counterclockwise direction, as viewed in Figs. 2 and 5, until the arm 89 of said lever engages the spring buffer stop 88, the pawl carrying lever 62 moving clockwise until it engages the spring buffer stop 16.

'It will be apparent that by setting the cam 44 in different adjusted positions upon the fulcrum pin 38 it is possible to regulate the amount of forward travel of the bifurcated ejector bar 20 and accordingly the amount of force applied against the chip 26 left upon the crease plate 24, said amount being suicient to move" the chip over the forward edges 28 of the crease plate and into' but not beyond the container.

'Having described our invention, what we claim 'as new and desire to secure by Letters Patentof the United States is:

1. Ina heel seat fitting machine, a movable spring-energized actuator having a fixed driving -stroke, a reoiprocatory ejector bar movable to remove a chip from the machine, positive driving means between 4the actuator and the ejector "bar, mechanism comprising a cam for rendering said'driving means inoperative to cause chip ejecting movement of said bar to cease, and means for setting said cam in different adjusted posil tions in order to cause the actuator to be disconnected from the bar at different portions of the driving stroke of the actuator.

2. In a heel seat tting machine, an ejector bar, a lever for operating said bar, a stop, a spring for constantly urging the lever to an idle position against the stop, a spring-energized actuator having a constant driving stroke, a coupling for positively moving said lever in response to movement of the actuator, and means for rendering inoperative the coupling between the actuator and the lever at different stages of the driving stroke of the actuator.

3. In a heel seat fitting machine, a reciprocable chip ejector bar, a lever pivoted to the ejector bar, a spring for constantly urging the lever to a retracted idle position, an actuator, a stop, a spring for urging the actuator in one direction against 'the stop, means for causing the lever to be moved positively in response to spring-energized movement of the actuator toward said stop, and mechanism comprising a cam for rendering said means inoperative at a predetermined stage of the spring-energized movement of the actuator to break the driving connection between the lever and the actuator, said lever when its driving connection with the actuator is 4broken being moved back to its retracted idle position by its associated spring.

4. In a heel seat tting machine, a reciprocable ejector bar, a carrier Vfor a heel seatreducing knife, resilient means for constantly urging the ejector bar to a retracted idle position, an actuator, a stop, a spring for constantly urging the actuator in one direction against the stop, a latch movable in response to movement of the knife carrier for moving the actuator to a cocked positionA against the action of the spring, means for tripping the latch to permit the cocked actuator to move under the action of the spring toward said stop, and a driving coupling constructed and arranged to cause the ejector bar positively to be moved away from its retracted idle position in response to spring-energized movement of the actuator, said coupling being rendered inoperative after the actuator has moved a predetermined distance from its cocked position thereby permitting the ejector bar to move back to its retracted idle position under the action of said resilient means.

5. In a heel seat fitting machine, a chip ejector bar, a lever for operating said bar, an actuator, a spring, means for moving the actuator to a cocked position against the action of the spring, a pawl carried by the actuator, a shoulder which is formed on said lever and is constructed and arranged to be engaged by said pawl when the actuator is approximately in its cocked position, means for releasing the actuator from its cocked position to permit it to be moved by said spring thereby causing the lever to be moved through the pawl away fromv an idle retracted position, and cam-operated means for moving the pawl away from said shoulder of the lever at a predetermined stage of the movement of the actuator away from its cocked position to cause the lever to be disconnected from the actuator and to be permitted to move back to its idle retracted position.

6. In a heel seat tting machine, an actuator, a reciprocatory ejector bar, a lever operatively connected to the bar, a spring which connects the actuator to the lever and is constructed and arranged constantly to urge the ejector bar to an idle retracted position, a stop, a second spring cooperating With the first-named spring in urgingv the actuator to an idle position against the stop, means ilor moving the actuator to a cocked position against the action of said springs, means comprising a latch for retaining the actuator in its cocked position, means for causing the lever to be moved positively in response to movement of the actuator away from its cocked position and thus to cause said lever and accordingly the ejector bar to remove from the machine a chip trimmed from the heel seat portion of the outsole of a shoe, and means for disconnecting said lever from the actuator at a predetermined stage of the stroke of the actuator toward said stop to cause ejecting movement of said bar to cease and to permit said bar to return to its idle retracted position under the action of the rst-named spring.

7. In a heel seat tting machine, an ejector bar, a lever operatively connected t/o the bar, an actuator, a pair of stops, a tension spring which connects the lever and the actuator and is constructed and arranged constantly to urge the lever and the actuator to idle positions against the respective stops, another tension spring constructed and arranged constantly to urge the actuator with considerable force against its associated stop, a carrier for a heel seat reducing knife, a latch mounted upon said carrier and constructed and arranged upon retractive movement of the carrier to move the actuator against the action of said springs to a cocked position away from its associated stop, a coupling for securing the lever to the actuator when said actuator has been moved approximately to its cocked position, means for tripping the latch when the actuator is in its cocked position to permit the then springenergized actuator to move toward the stop thereby positively moving with it the lever and the ejector bar, and means comprising an adjustable cam for breaking the coupling between the actuator and the lever at a variable but predetermined stage of the spring-energized stroke of the actuator to vary the extent of ejecting movement of said bar.

THOMAS BAGGOTT CLARKE. FREDERICK WILLIAM HENRY WILLIAMS. 

